Degradation of dye rhodamine B under visible irradiation with Prussian blue as a photo-Fenton reagent |
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Authors: | Shou-Qing Liu Shi Cheng Li Luo Hong-Ying Cheng Song-Jun Wang Shuai Lou |
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Institution: | (1) College of Chemistry and Bioengineering, Suzhou University of Science and Technology, 215009 Suzhou, China |
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Abstract: | Rhodamine B can be degraded using Prussian blue as a photo-Fenton like reagent under λ > 420 nm visible irradiation. Kinetic
studies show ln(C
o/C
t
) is linearly proportional to the reaction time during the photo-degradation process; thus, the degradation reaction obeys
a pseudo-first order kinetic law. It is very interesting that the presence of salinity such as 0.1 M KCl can speed up greatly
the degradation rate: the time to achieve 90.0% degradation ratio is shortened from 120.0 to 40.0 min under comparable conditions,
which is very useful in the treatment of wastewaters with high content of salinity. |
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Keywords: | |
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